<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Title</title>
</head>
<body>
<script>
    setTimeout(()=>{
        console.log(1)
    },0)
    Promise.resolve().then(()=>{
        console.log(2)
    })
    Promise.resolve().then(()=>{
        console.log(4)
    })
    console.log(3)
</script>
</body>
</html>
